OK, let's work through this together. We're starting with 36 and we're going to multiply it by 144, which means we add 36 to itself 144 times.
Step 1: 0 + 36 = 36
Step 2: 36 + 36 = 72
Step 3: 72 + 36 = 108
Step 4: 108 + 36 = 144
Step 5: 144 + 36 = 180
Step 6: 180 + 36 = 216
Step 7: 216 + 36 = 252
Step 8: 252 + 36 = 288
Step 9: 288 + 36 = 324
Step 10: 324 + 36 = 360
Step 11: 360 + 36 = 396
Step 12: 396 + 36 = 432
Step 13: 432 + 36 = 468
Step 14: 468 + 36 = 504
Step 15: 504 + 36 = 540
Step 16: 540 + 36 = 576
Step 17: 576 + 36 = 612
Step 18: 612 + 36 = 648
Step 19: 648 + 36 = 684
Step 20: 684 + 36 = 720
Step 21: 720 + 36 = 756
Step 22: 756 + 36 = 792
Step 23: 792 + 36 = 828
Step 24: 828 + 36 = 864
Step 25: 864 + 36 = 900
Step 26: 900 + 36 = 936
Step 27: 936 + 36 = 972
Step 28: 972 + 36 = 1008
Step 29: 1008 + 36 = 1044
Step 30: 1044 + 36 = 1080
Step 31: 1080 + 36 = 1116
Step 32: 1116 + 36 = 1152
Step 33: 1152 + 36 = 1188
Step 34: 1188 + 36 = 1224
Step 35: 1224 + 36 = 1260
Step 36: 1260 + 36 = 1296
Step 37: 1296 + 36 = 1332
Step 38: 1332 + 36 = 1368
Step 39: 1368 + 36 = 1404
Step 40: 1404 + 36 = 1440
Step 41: 1440 + 36 = 1476
Step 42: 1476 + 36 = 1512
Step 43: 1512 + 36 = 1548
Step 44: 1548 + 36 = 1584
Step 45: 1584 + 36 = 1620
Step 46: 1620 + 36 = 1656
Step 47: 1656 + 36 = 1692
Step 48: 1692 + 36 = 1728
Step 49: 1728 + 36 = 1764
Step 50: 1764 + 36 = 1800
Step 51: 1800 + 36 = 1836
Step 52: 1836 + 36 = 1872
Step 53: 1872 + 36 = 1908
Step 54: 1908 + 36 = 1944
Step 55: 1944 + 36 = 1980
Step 56: 1980 + 36 = 2016
Step 57: 2016 + 36 = 2052
Step 58: 2052 + 36 = 2088
Step 59: 2088 + 36 = 2124
Step 60: 2124 + 36 = 2160
Step 61: 2160 + 36 = 2196
Step 62: 2196 + 36 = 2232
Step 63: 2232 + 36 = 2268
Step 64: 2268 + 36 = 2304
Step 65: 2304 + 36 = 2340
Step 66: 2340 + 36 = 2376
Step 67: 2376 + 36 = 2412
Step 68: 2412 + 36 = 2448
Step 69: 2448 + 36 = 2484
Step 70: 2484 + 36 = 2520
Step 71: 2520 + 36 = 2556
Step 72: 2556 + 36 = 2592
Step 73: 2592 + 36 = 2628
Step 74: 2628 + 36 = 2664
Step 75: 2664 + 36 = 2700
Step 76: 2700 + 36 = 2736
Step 77: 2736 + 36 = 2772
Step 78: 2772 + 36 = 2808
Step 79: 2808 + 36 = 2844
Step 80: 2844 + 36 = 2880
Step 81: 2880 + 36 = 2916
Step 82: 2916 + 36 = 2952
Step 83: 2952 + 36 = 2988
Step 84: 2988 + 36 = 3024
Step 85: 3024 + 36 = 3060
Step 86: 3060 + 36 = 3096
Step 87: 3096 + 36 = 3132
Step 88: 3132 + 36 = 3168
Step 89: 3168 + 36 = 3204
Step 90: 3204 + 36 = 3240
Step 91: 3240 + 36 = 3276
Step 92: 3276 + 36 = 3312
Step 93: 3312 + 36 = 3348
Step 94: 3348 + 36 = 3384
Step 95: 3384 + 36 = 3420
Step 96: 3420 + 36 = 3456
Step 97: 3456 + 36 = 3492
Step 98: 3492 + 36 = 3528
Step 99: 3528 + 36 = 3564
Step 100: 3564 + 36 = 3600
Step 101: 3600 + 36 = 3636
Step 102: 3636 + 36 = 3672
Step 103: 3672 + 36 = 3708
Step 104: 3708 + 36 = 3744
Step 105: 3744 + 36 = 3780
Step 106: 3780 + 36 = 3816
Step 107: 3816 + 36 = 3852
Step 108: 3852 + 36 = 3888
Step 109: 3888 + 36 = 3924
Step 110: 3924 + 36 = 3960
Step 111: 3960 + 36 = 3996
Step 112: 3996 + 36 = 4032
Step 113: 4032 + 36 = 4068
Step 114: 4068 + 36 = 4104
Step 115: 4104 + 36 = 4140
Step 116: 4140 + 36 = 4176
Step 117: 4176 + 36 = 4212
Step 118: 4212 + 36 = 4248
Step 119: 4248 + 36 = 4284
Step 120: 4284 + 36 = 4320
Step 121: 4320 + 36 = 4356
Step 122: 4356 + 36 = 4392
Step 123: 4392 + 36 = 4428
Step 124: 4428 + 36 = 4464
Step 125: 4464 + 36 = 4500
Step 126: 4500 + 36 = 4536
Step 127: 4536 + 36 = 4572
Step 128: 4572 + 36 = 4608
Step 129: 4608 + 36 = 4644
Step 130: 4644 + 36 = 4680
Step 131: 4680 + 36 = 4716
Step 132: 4716 + 36 = 4752
Step 133: 4752 + 36 = 4788
Step 134: 4788 + 36 = 4824
Step 135: 4824 + 36 = 4860
Step 136: 4860 + 36 = 4896
Step 137: 4896 + 36 = 4932
Step 138: 4932 + 36 = 4968
Step 139: 4968 + 36 = 5004
Step 140: 5004 + 36 = 5040
Step 141: 5040 + 36 = 5076
Step 142: 5076 + 36 = 5112
Step 143: 5112 + 36 = 5148
Step 144: 5148 + 36 = 5184

So, 36*144 = 5184